0.3(3z+6)+43.4=0.7(3z-4)

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Solution for 0.3(3z+6)+43.4=0.7(3z-4) equation:


Simplifying
0.3(3z + 6) + 43.4 = 0.7(3z + -4)

Reorder the terms:
0.3(6 + 3z) + 43.4 = 0.7(3z + -4)
(6 * 0.3 + 3z * 0.3) + 43.4 = 0.7(3z + -4)
(1.8 + 0.9z) + 43.4 = 0.7(3z + -4)

Reorder the terms:
1.8 + 43.4 + 0.9z = 0.7(3z + -4)

Combine like terms: 1.8 + 43.4 = 45.2
45.2 + 0.9z = 0.7(3z + -4)

Reorder the terms:
45.2 + 0.9z = 0.7(-4 + 3z)
45.2 + 0.9z = (-4 * 0.7 + 3z * 0.7)
45.2 + 0.9z = (-2.8 + 2.1z)

Solving
45.2 + 0.9z = -2.8 + 2.1z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-2.1z' to each side of the equation.
45.2 + 0.9z + -2.1z = -2.8 + 2.1z + -2.1z

Combine like terms: 0.9z + -2.1z = -1.2z
45.2 + -1.2z = -2.8 + 2.1z + -2.1z

Combine like terms: 2.1z + -2.1z = 0.0
45.2 + -1.2z = -2.8 + 0.0
45.2 + -1.2z = -2.8

Add '-45.2' to each side of the equation.
45.2 + -45.2 + -1.2z = -2.8 + -45.2

Combine like terms: 45.2 + -45.2 = 0.0
0.0 + -1.2z = -2.8 + -45.2
-1.2z = -2.8 + -45.2

Combine like terms: -2.8 + -45.2 = -48
-1.2z = -48

Divide each side by '-1.2'.
z = 40

Simplifying
z = 40

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